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Finding the Fourth Proportional to 28,899,192.78, 39,842,305.85 and 22,958,311.50

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Solution

The fourth proportional to 28,899,192.78, 39,842,305.85 and 22,958,311.50 is: 31,651,820.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899,192.78 : 39,842,305.85 = 22,958,311.50 : x
  2. Step 2: Convert to fraction form
    28,899,192.78/39,842,305.85 = 22,958,311.50/x
  3. Step 3: Cross multiply
    28,899,192.78x = 39,842,305.85 × 22,958,311.50
  4. Step 4: Simplify right side
    28,899,192.78x = 914,712,068,467,780.75
  5. Step 5: Solve for x
    x = 914,712,068,467,780.75/28,899,192.78
  6. Step 6: Final answer
    x = 31,651,820.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.